CN102562801B - Aerodynamic bearing - Google Patents
Aerodynamic bearing Download PDFInfo
- Publication number
- CN102562801B CN102562801B CN201110421170.3A CN201110421170A CN102562801B CN 102562801 B CN102562801 B CN 102562801B CN 201110421170 A CN201110421170 A CN 201110421170A CN 102562801 B CN102562801 B CN 102562801B
- Authority
- CN
- China
- Prior art keywords
- foil
- layer
- rotor
- bearing
- dynamic bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention relates to an aerodynamic bearing, which comprises a bearing outer ring, a foil layer and a rotor, wherein the foil layer is annularly and flatly paved in the bearing outer ring and fixed with the bearing outer ring; the rotor is positioned in the foil layer, and a tiny gap is reserved between the rotor and the foil layer; the foil layer consists of a single bottom layer foil and a single top layer foil covered on the single bottom layer foil from outside to inside; ripples are uniformly distributed on the bottom layer foil along the axial direction of the rotor, and the rigidity of the two sides in the axial direction is greater than that of the middle part; and a lubricating layer is coated on the inner side of the top layer foil. The aerodynamic bearing has the characteristics of high bearing capacity, high stability and the like, and is easy to manufacture.
Description
Technical field
The present invention relates to a kind of aero dynamic bearing.
Background technology
Compliant foil gas hydrodynamic bearing is one kind of gas bearing, is gas bearing later development in recent years,
It is the wedge gap relying on the axle of rotation constantly the gas with certain viscosity to be brought into convergence, because gas is being revolved by axle
Turn and compressed during sucking the wedge gap restrained, and produce air film power, when air film power is sufficient on loading direction
During balance external applied load, it is the formation of a complete pressure air film between axle and bearing, so that bearing and the surface disengaging of axle is connect
Touch, form pure gas friction.Due to this mechanism, elastic foil bearing has that operating temperature range is wide, speed is high, frictional dissipation
Little the advantages of, it is particularly well-suited to high-speed rotating machine.
In view of foil gas hydrodynamic bearing is in the unrivaled advantage in high-speed rotating machine field, it has obtained American and Britain etc.
This technology of the great attention of developed country, the wherein U.S. is the most advanced, enters commercial stage in multiple fields.State
Inside also have some universities, Research Center in one's power enterprise in the development work carrying out this respect.
Current foil gas hydrodynamic bearing is polylith paillon foil bridging arrangement, by top foil and the superposition of multilamellar bottom paillon foil
Constitute, the technological difficulties running into be mainly the low bearing capacity of foil gas bearing, low speed start-stop stage big to the frictional force of paillon foil,
Short life, stability are poor and are not easy to manufacture etc..
Content of the invention
The present invention in order to the low bearing capacity solving existing foil gas bearing, the property stablized difference and be not easy to manufacture etc. lack
Point, and then provide a kind of new aero dynamic bearing.
The technical solution of the present invention is：Pneumatic bearing includes outer race, foil layer and rotor, described foil layer
Annular is laid in outer race and is fixed with outer race, and rotor is located at foil layer inside and exists small and foil layer between
Gap；The top foil of the monolayer that the bottom paillon foil of described foil layer ecto-entad respectively monolayer covers thereon, described
Bottom paillon foil be along the uniform corrugated of rotor axial and the rigidity of axial both sides is more than middle rigidity；Described top foil
Inner side scribbles lubricating layer；Fixed form between described foil layer and outer race can be provided with axial direction on outer race
Groove, one end when rotor rotates by pulling force of described paillon foil is fixed on groove by pretension pin, and described is recessed
The opposite direction that when position of groove is located at bearing working, the minimum air void point that formed rotate along rotor between 70～110 degree,
Preferably 90 degree.The wave pitch of the described both sides of bottom paillon foil is than broad in the middle；The lubricating layer that described top foil is applied
For molybdenum bisuphide, Teflon or bronze.
During work, due to there being small gap between rotor and paillon foil, constantly having certain viscosity during rotor rotation
Gas bring the wedge gap of convergence into, produced air film power because gas compresses in wedge gap, when in load side
When air film power is sufficient to balance external applied load upwards, bearing is disengaged with the surface of axle, forms pure gas friction.
The wave pitch ratio of the both sides of two end regions of the bottom paillon foil of the present invention is broad in the middle, in so that the rigidity of both sides is more than
Between rigidity, rotor can be effective against at the volley due to bending, shake, the infringement that causes of decentraction, it is to avoid two ends air film
The depression of bearing force that the reduction of pressure causes；Design using monolithic bottom paillon foil and monolithic top foil greatly reduces manufacture
Difficulty；Using corrugated bottom paillon foil and there is certain elasticity, can avoid during rotor high-speed rotation to the impact of structure and
Infringement；Paillon foil being fixed using groove and pretension pin mechanism, paillon foil movement at work being prevented, thus improving paillon foil axle
Hold the stability of work, structure is simple, dependable performance, select the optimum position of groove can effectively resist during rotor rotation to paper tinsel
The infringement of piece；Top foil with lubricant coating can be greatly reduced the frictional dissipation to bearing for the starting and stopping stage, thus improving the longevity
Life.
Brief description
Fig. 1 is compliant foil gas hydrodynamic bearing schematic diagram；
Fig. 2 is the partial enlarged drawing of Fig. 1；
Fig. 3 is bottom paillon foil schematic diagram.
Specific embodiment
As illustrated, aero dynamic bearing includes outer race, foil layer and rotor, described foil layer annular is laid in
Fix in outer race and with outer race, rotor is located at foil layer inside and there is small gap and foil layer between；Institute
The foil layer ecto-entad stated is respectively the top foil of monolayer that the bottom paillon foil of monolayer covers thereon, described bottom paillon foil
It is along the uniform corrugated of rotor axial and the rigidity of axial both sides is more than middle rigidity；Profit is scribbled inside described top foil
Slip layer；Fixed form between described foil layer and outer race can be provided with axial groove, institute on outer race
The one end when rotor rotates by pulling force of the paillon foil stated is fixed on groove by pretension pin, the position position of described groove
Between the opposite direction that the minimum air void point being formed when bearing working rotates along rotor is in 70～110 degree, preferably 90 degree.
The wave pitch of the described both sides of bottom paillon foil is than broad in the middle；The lubricating layer that described top foil is applied be molybdenum bisuphide,
Teflon or bronze.
Embodiment one
A kind of miniature gas turbine generating set blade rotor bearing, including outer race, foil layer and rotor, described
Foil layer annular is laid in outer race and is fixed with outer race, and rotor is located at foil layer inside and deposits and foil layer between
In small gap；The top layer paper tinsel of the monolayer that the bottom paillon foil of described foil layer ecto-entad respectively monolayer covers thereon
Piece；The wave pitch of the described both sides of bottom paillon foil is than broad in the middle.One layer of Teflon is scribbled inside described top foil；Institute
Fixed form between the foil layer stated and outer race can be for being provided with axial groove on outer race, described paillon foil
The one end when rotor rotates by pulling force be fixed on groove by pretension pin, the position of described groove is located at bearing work
As when the minimum air void point that formed be in 90 degree along the opposite direction that rotor rotates.
Claims (8)
1. a kind of aero dynamic bearing, is characterized in that, aero dynamic bearing includes outer race (2), foil layer and rotor (1),
Described foil layer is laid in outer race (2) and fixing with outer race (2), rotor (1) be located at foil layer internal and with
There is small gap between foil layer；The bottom paillon foil (3) that described foil layer ecto-entad is respectively monolayer covers thereon
Monolayer top foil (4), described bottom paillon foil (3) is along the uniform corrugated of rotor axial and the rigidity of axial both sides is big
In middle rigidity；Lubricating layer is scribbled inside described top foil (4).
2. aero dynamic bearing as claimed in claim 1, is characterized in that, between described foil layer and outer race (2)
Fixed form is to be provided with axial groove on outer race, and one end being subject to pulling force when rotor rotates of described foil layer leads to
Cross pretension pin (5) to be fixed on groove.
3. aero dynamic bearing as claimed in claim 2, is characterized in that, the shape when position of described groove is located at bearing working
The opposite direction that the minimum air void point becoming rotate along rotor is between 70～110 degree.
4. aero dynamic bearing as claimed in claim 3, is characterized in that, the shape when position of described groove is located at bearing working
The minimum air void point becoming is in 90 degree along the opposite direction that rotor rotates.
5. aero dynamic bearing as claimed in claim 1, is characterized in that, between the described ripple of both sides of bottom paillon foil (3)
Away from than broad in the middle.
6. aero dynamic bearing as claimed in claim 1, is characterized in that, the lubricating layer that described top foil (4) is applied is
Molybdenum bisuphide.
7. aero dynamic bearing as claimed in claim 1, is characterized in that, the lubricating layer that described top foil (4) is applied is
Teflon.
8. aero dynamic bearing as claimed in claim 1, is characterized in that, the lubricating layer that described top foil (4) is applied is
Bronze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110421170.3A CN102562801B (en) | 2011-12-13 | 2011-12-13 | Aerodynamic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110421170.3A CN102562801B (en) | 2011-12-13 | 2011-12-13 | Aerodynamic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102562801A CN102562801A (en) | 2012-07-11 |
| CN102562801B true CN102562801B (en) | 2017-02-08 |
Family
ID=46409080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110421170.3A Expired - Fee Related CN102562801B (en) | 2011-12-13 | 2011-12-13 | Aerodynamic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102562801B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632884A (en) * | 2015-03-01 | 2015-05-20 | 北京航空航天大学 | Radial-bearing flexible protecting bearing for magnetic suspension high-speed rotating equipment |
| CN106438676B (en) * | 2016-12-05 | 2019-02-19 | 中国工程物理研究院机械制造工艺研究所 | Flexible kinetic pressure gas thrust bearing and its assemble method |
| CN109973517A (en) * | 2019-04-12 | 2019-07-05 | 上海优社动力科技有限公司 | A kind of novel radial air foil bearing and preparation method thereof |
| CN110067808A (en) * | 2019-05-13 | 2019-07-30 | 大连理工大学 | A kind of air hydrodynamic foil bearing paillon fixed structure of cylinder pin type |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5116143A (en) * | 1990-12-20 | 1992-05-26 | Allied-Signal Inc. | High load capacity journal foil bearing |
| US5988885A (en) * | 1997-03-28 | 1999-11-23 | Mohawk Innovative Technology, Inc. | High load capacity compliant foil hydrodynamic journal bearing |
| CN2363119Y (en) * | 1998-12-29 | 2000-02-09 | 西安交通大学 | Dynamic pressure radial bearing for elastic support foil piece |
| CN1918392A (en) * | 2004-02-14 | 2007-02-21 | 科特博公司 | Radial foil bearing |
| CN101709747A (en) * | 2009-11-17 | 2010-05-19 | 西安交通大学 | Foil dynamical pressure radial air journal bearing with backward wave foil support |
| CN102003463A (en) * | 2009-08-31 | 2011-04-06 | 扭力士有限公司 | Journal-foil air bearing |
| CN202946545U (en) * | 2011-12-13 | 2013-05-22 | 哈尔滨东安发动机（集团）有限公司 | Aerodynamic bearing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6848828B2 (en) * | 2002-03-08 | 2005-02-01 | Ntn Corporation | Foil bearing and spindle device using the same |
| JP2005009556A (en) * | 2003-06-18 | 2005-01-13 | Toshiba Corp | Foil type gas bearing device |
-
2011
- 2011-12-13 CN CN201110421170.3A patent/CN102562801B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5116143A (en) * | 1990-12-20 | 1992-05-26 | Allied-Signal Inc. | High load capacity journal foil bearing |
| US5988885A (en) * | 1997-03-28 | 1999-11-23 | Mohawk Innovative Technology, Inc. | High load capacity compliant foil hydrodynamic journal bearing |
| CN2363119Y (en) * | 1998-12-29 | 2000-02-09 | 西安交通大学 | Dynamic pressure radial bearing for elastic support foil piece |
| CN1918392A (en) * | 2004-02-14 | 2007-02-21 | 科特博公司 | Radial foil bearing |
| CN102003463A (en) * | 2009-08-31 | 2011-04-06 | 扭力士有限公司 | Journal-foil air bearing |
| CN101709747A (en) * | 2009-11-17 | 2010-05-19 | 西安交通大学 | Foil dynamical pressure radial air journal bearing with backward wave foil support |
| CN202946545U (en) * | 2011-12-13 | 2013-05-22 | 哈尔滨东安发动机（集团）有限公司 | Aerodynamic bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102562801A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102562801B (en) | Aerodynamic bearing | |
| CN105889314B (en) | A kind of highway turbine booster | |
| CN210739124U (en) | Thrust foil hydrodynamic air bearing with integrated top foil structure | |
| TWI704297B (en) | Hybrid dynamic pressure gas thrust bearing | |
| WO2016184405A1 (en) | Miniature blower | |
| CN101709747A (en) | Foil dynamical pressure radial air journal bearing with backward wave foil support | |
| CN205858770U (en) | A kind of little Minitype radiating fan | |
| CN208966886U (en) | The bearing pre-tightening structure of main shaft | |
| CN110594286B (en) | Foil gas dynamic pressure bearing and high-speed motor | |
| CN202946545U (en) | Aerodynamic bearing | |
| CN201956795U (en) | Flywheel energy storage device | |
| CN105179462B (en) | A kind of ripple foil-type air hydrodynamic bearing | |
| WO2019100787A1 (en) | Bearing cooling structure, motor and centrifugal compressor | |
| CN206338317U (en) | Flexible kinetic pressure gas thrust bearing | |
| CN112096733A (en) | Air-floatation radial bearing and foil | |
| CN203431003U (en) | Axial aero dynamic bearing | |
| CN203289275U (en) | Wind power slip ring | |
| CN215908074U (en) | Air compressor rotor assembly | |
| CN102122860A (en) | Flywheel energy storage device | |
| CN202579969U (en) | Compact-type planetary carrier for yawing gear box | |
| CN107191340A (en) | A kind of self-aligning roller bearing and wind driven generator principal shaft supporting construction | |
| CN103388622B (en) | Axial gas hydraulic bearing | |
| CN210660425U (en) | Shafting assembly of wind driven generator | |
| CN208997013U (en) | A kind of bearing and a kind of fan | |
| CN213451312U (en) | Air-floatation radial bearing and foil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20211213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |